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S. VANCE. suspending Drop Lights Patent'ed Nov. 5, 1867.

N. FHERS, FHOTO-LITHOGHAPHER. WASHINGTON. D. C.

112B 181125 Elttltiti 3111352.

g t t? SAMUEL B. H. VANCE, OF NEW YORK, N. Y., ASSIGNOR TO MITCHELL, VANCE, AND COMPANY, OF SAME PLACE.

Letters Patent No. 70,653, dated November 5, 1867.

IMPROVEMENT IN MEANS OF SUSPBNDING GASOLIERS AND DROP-LIGHTS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, SAMUEL B. H. VANCE, of the city, county, and State of New York, have invented certain new and useful Improvements in Means for suspending Gasoliers and Drop-Lights; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, making aportion of this specification, in which Figure 1 is a side view of an apparatus constructed according to my invention.

Figure 2 is a detached view of a portion of the same, on an enlarged scale.

Similar letters of reference indicate corresponding parts in both figures.

This invention relates to that class of devices for suspending gasoliers and drop-lights which are constructed with a system of lazy-tongs, whereby they may be elongated or shortened to any-required extent; and the invention consists in constructing the lazy-tongs or extensible portionof such device with an internal gas passage, in such manner that the framework of which the ordinary lazy-tongs are composed is wholly dispensed with, thereby not only simplifying and cheapening the construction of the apparatus, but also rendering the same much lighter and more tasteful in appearance. The invention further consists in a novel arrangement of guides with reference to the lazy-tongs, whereby the several parts of the apparatus are properly kept in place, to whatever extent such apparatus may be elongated, without necessitating, as in the devices hitherto made of the class mentioned, any considerable length in the tubular stem which connects the burner with the extensible portion of the apparatus.

To enable others'to understand the nature and construction of my invention, I will proceed to describe it with reference to the drawings. E

Short lengths or sections of tubes are indicated respectively at a and 6, and constitute the arms of the system of lazy-tongs presently herein described, the sections marked a being jointed or pivoted together at their ends by cylindrical pivoting spurs, a, the other sections, b, being connected at their adjoining ends in like manner, while the sections a b are pivoted together at their centres by similar pivoting spurs, b, so that by these means the aforesaid sections constitute a series or system of lazy-tongs which may be shortened or elongated at pleasure. The tubular sections a communicate with each other by means of opening a in the pivoting. spurs a thereof, and have orifices, 5, formed in the spurs b, by which they are connected with the sections 6, so that by this means a continuous passage is formed throughout the entire length of the lazy-tongs. The upper end of this passage communicates with the gas-supply pipe A, from which the lazy-tongs, or rather the apparatus itself, issuspcnded, while the lower end of such passage communicates by a short tubular stem, f, with the branch pipes c, which support the burner 01 of the said drop-light, the gas being thus enabled to pass when desired, without interruption from the pipe A, to the burner just mentioned, whether the lazy-tongs or extensible portion of the apparatus be elongated to a greater or less degree. In order that the lazy-tongs may be held stationary at any desired position, two fusees, B, are provided, one upon each side of the gas pipe A, and each connected with the lower end of the lazy-tongs by a cord, e, the said fusees being furnished with internal springs, so applied and of such stifl'ness as to cause the cords e to be wound upon such fusoes when the lazytongs are shortened, and to exert suflicient tension upon the said cords to counterbalance the weight of the apparatus, thus insuring the required retention of the said apparatus with its burner at a greater or less distance from the end of the gas pipeA. In order to insure the retention of the burner cl in proper position with reference to the lacy-tongs or extensible portion of the apparatus, the stem f, by which the branch pipes c are connected with the gas passage hercinbcforc mentioned, of the said. extensible portion, has attached to it two upwardly-extending and parallel rods, g, which pass through suitable slots formed in the ends of a transverse block, on, attached to one of the central pivots, b, of the said portion, such rods constituting guides which hold the burner in proper position with regard to the other parts of; the apparatus, and which, sliding through the slots of the block m, permit the burner to be raised or loweredwit-hout requiring the stemfto be made of any considerable length, as would be the case if the said stem were made to slide with reference to the said guides. When desired, the gas pipe A mayibe provided with a. fixed gasolier, as indicated at c in fig. 1, with the apparatus herein described situated centrally within the said gasolier, as represented in the aforesaid figure.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The apparatus composed of: a system of lazy-tongs, the arms and pivots of which are constructed with an internal gas passage communicating with a suitable burner, substantially as and for the purpose specified.

2. The parallel guides g, attached to the stemf, and arranged and operating in relation with the system of lazy-tongs, substantially as and for the purpose specified.

' SAML. B. H. VANCE.

Witnesses:

J. W. Goones,

G. W. Elsi-1n. 

